/Engine/Source/Editor/SubobjectEditor/Public/SSubobjectEditor.h
Recursively visits the given node + its children and invokes the given function for each.
void DepthFirstTraversal ( const FSubobjectEditorTreeNodePtrType & InNodePtr, [TSet](API\Runtime\Core\Containers\TSet)< FSubobjectEditorTreeNodePtrType > & OutVisitedNodes, const [TFunctionRef](API\Runtime\Core\GenericPlatform\TFunctionRef)< void(const FSubobjectEditorTreeNodePtrType &)> InFunction ) const